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CHEM 104 LAB REPORTS/EXAM 1-8 COMPLETED, A+ GRADE
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COMPLETED LAB REPORTS FOR CHEM 104 ONLINE COURSE WITH STUDY REFERENCE FOR LAB EXAM
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Voorbeeld van de inhoud
ChemistryLab
Report
1
Procedure:
Experiment
#1:
Concentration
influence
on
rate
1.
Make
a
solution
using
0.10mL
of
Thiosulfate
and
1
M
of
HCL
2.
Use
5
different
test
tubes
and
label
each
tube
#1
-
#5.
3.
In
test
tube
#1,
pour
10mL
of
Thiosulfate
and
0
mL
of
water
4.
In
test
tube
#2,
pour
8mL
of
the
Thiosulfate
and
2.0
mL
of
water
5.
In
test
tube
#3,
pour
6mL
of
Thiosulfate
and
4.0
mL
of
water
6.
In
test
tube
#4,
pour
4
mL
of
the
Thiosulfate
and
6.0
mL
of
water
7.
In
test
tube
#5,
pour
2
mL
of
the
Thiosulfate
and
8.0
mL
of
water
8.
Calculate
the
concentration
values
of
each
test
tube
using
the
formula:𝐶1𝑉1 = 𝐶2𝑉2
and
record
on
table
1
9.
Mix
each
test
tube
with
10mL
of
HCL
shake
lightly
and
start
a
timer
to
record
time
for
each
test
tube
10.
Watch
for
light
opaque/cloudy
results
or
turbidity
11.
When
solution
starts
to
turn
cloudy,
record
time
on
the
table
2
12.
Calculate
the
relative
rate
on
table
2
using
the
formula:𝑅𝑒𝑙𝑎𝑡𝑖𝑣𝑒 𝑅𝑎𝑡𝑒 = 1/𝑠𝑒𝑐 Experiment
#2:
Peroxide
reaction
with
Iodine
(catalyst)
to
break
down
oxygen
and
water
1.
Gather
3
test
tubes
and
label
them
#1-#3
2.
Use
a
gas
apparatus
to
measure
the
volume
of
O2
3.
In
test
tube
#1,
mix
5mL
of
Peroxide
and
15mL
of
water
in
flask
and
put
stopper
on
flask
4.
Record
the
beginning
volume
from
the
flask
5.
Pour
in
10mL
of
Potassium
Iodine
into
the
flask
and
start
timer
after
2mL
of
oxygen
is
produced
and
record
on
table
2
6.
In
test
tube
#2,
mix
10mL
of
Peroxide
and
10mL
of
water
in
flask
and
put
stopper
on
flask
7.
Record
the
beginning
volume
from
the
flask
8.
Pour
in
10mL
of
Potassium
Iodine
into
the
flask
and
start
timer
after
2mL
of
oxygen
is
produced
and
record
on
table
2
9.
In
test
tube
#3,
mix
5mL
of
Peroxide
and
5mL
of
water
in
flask
and
put
stopper
on
flask
10.
Record
the
beginning
volume
from
the
flask
11.
Pour
in
20mL
of
Potassium
Iodine
into
the
flask
and
start
timer
after
2mL
of
oxygen
is
produced
and
record
on
table
2
12.
After
each
trial
is
completed,
calculate
the
Rate
using
the
formula:
and
record
on
table
2𝑅𝑒𝑙𝑎𝑡𝑖𝑣𝑒 𝑅𝑎𝑡𝑒 = 1/𝑠𝑒𝑐 Experiment
#3:
Peroxide
reaction
with
Iodine
at
a
higher
temp
1.
Use
a
water
bath
at
35
degrees
Celsius
and
connect
it
to
the
flask
2.
Label
a
test
tube
with
#4
3.
Mix
5mL
of
Peroxide
and
5mL
of
water
in
the
flask.
4.
Pour
in
10
mL
of
Potassium
Iodine
put
stopper
on
flask
5.
Wait
to
start
the
timer
after
2mL
and
record 6.
Compare
this
trial
to
the
1st
trial
that
was
completed
at
21
degrees
Celsius
7.
Calculate
rate
and
record
on
table
3
Chemistry
Lab
Report
2
Experiment
#:
2
Title:
Equilibrium
Reactions
Purpose:
In
this
lab,
we
will
learn
about
equilibrium
reaction
and
be
able
to
calculate
the
equilibrium
constant
Kc.
We
will
also
examine
Le
Chatelier’s
principle
and
how
various
equilibrium
reactions
shift
when
subjected
to
changes
in
temperature
or
concentration
and
how
they
are
also
reversible.
Procedure:
Experiment
#1:
The
Reaction
between
Acetic
Acid
and
Propyl
Alcohol
in
a
titration
1.
Using
a
pipette,
mix
10mL
of
Acetic
Acid
and
10mL
of
Propyl
Alcohol
in
a
flask
2.
In
a
beaker,
place
25mL
of
water
and
a
few
drops
of
Phenyl
Indicator
3.
Take
1mL
sample
out
of
the
mixture
using
a
pipette
and
place
sample
in
the
beaker
4.
Set
up
the
titration
by
utilizing
a
ring
stand
and
a
buret
5.
Place
flask
under
the
buret
6.
Pour
the
concentration
into
the
buret
7.
Start
titrating
by
slowly
adding
a
few
drops
until
a
pink
color
change
is
noted.
8.
When
a
pink
color
change
is
noted,
record
data
9.
Using
new
materials,
add
Sulfuric
Acid
to
the
mixture
of
Acetic
Acid
and
Propyl
Alcohol
in
a
beaker
and
mix
10.
Take
1mL
out
of
the
mixture
with
the
Sulfuric
Acid
11.
Place
flask
in
the
titration
setup
and
begin
to
titrate
by
slowly
adding
a
few
drops
at
a
time
until
a
pink
color
change
is
noted
12.
Once
a
pink
color
change
is
noted,
record
13.
Take
the
mixture
of
Acetic
Acid,
Propyl
Alcohol
and
Sulfuric
Acid
in
a
beaker
and
heat
with
a
Bunsen
Burner
for
1
hour
14.
Place
sample
in
beaker
that
contains
25mL
of
water
and
phenyl
indicator
15.
Start
titration
with
the
mixture
of
Acetic
Acid
and
Propyl
Alcohol
until
a
pink
color
change
is
noted
and
record
Experiment
#2:
Shifting
Equilibrium
-
Concentration
with
Iron
and
Thiocyanate
1.
Place
solution
of
Iron
into
test
tube
#1
2.
Place
solution
of
Thiocyanate
solution
into
test
tube
#2
3.
In
test
tube
#3,
mix
together
the
Iron
with
Thiocyanate
to
form
Iron
Thiocyanate
Iron
4.
In
test
tube
#3,
add
Thiocyanate
to
the
Iron
Thiocyanate
iron
5.
Stir
gently
and
record
the
color
change Experiment
#3:
Shifting
Equilibrium
-
Concentration
1.
Place
concentration
of
blue
tetra
aqua
copper
ion
in
a
test
tube
2.
Add
a
few
drops
of
concentrated
HCL
into
the
test
tube
until
color
change
3.
Record
findings
4.
Add
a
few
drops
of
H2O
to
the
same
test
tube
until
color
change
Experiment
#4:
Shifting
Equilibrium
-
Concentration
with
acid
and
base
1.
Place
Chromate
Ion
concentration
into
a
test
tube
2.
Take
a
few
drops
of
acid
(H3O)
and
mix
with
chromate
ion
until
color
change
3.
Record
findings
4.
Reverse
the
reaction
by
adding
a
few
drops
of
a
base
(NaOH
Until
color
change
Experiment
#5:
Shifting
Equilibrium
-
Concentration
with
NaCl
and
Chloride
ions
1.
Place
a
saturated
solution
of
NaCl
into
a
test
tube
2.
Add
a
few
drops
of
Chloride
ions
until
color
change
3.
Record
findings
Experiment
#6:
Shifting
Equilibrium
-
Concentration
with
Barium
and
Chromate
1.
Place
Barium
solution
into
a
test
tube
and
add
a
few
drops
of
chromate
to
produce
barium
chromate
2.
In
the
same
test
tube,
add
a
few
drops
of
acid
(H3O)
until
color
change
3.
Record
findings
Experiment
#7:
Shifting
Equilibrium
-
Temperature
1.
Take
2
test
tubes
containing
Cobalt
ion
2.
Heat
test
tube
#1
using
a
bunsen
burner
until
color
change
3.
Record
findings
4.
Cool
test
tube
#2
by
placing
in
ice
water
until
color
change
5.
Record
findings
Experiment
#8:
Shifting
Equilibrium
-
Concentration
with
Cobalt
Ion,
water
and
acid
1.
Take
3
test
tubes
containing
Cobalt
Ion
Solution
2.
Take
test
tube
#1
and
set
aside
-
this
is
your
control
3.
Take
test
tube
#2
and
add
a
few
drops
of
water
until
color
change
is
noted
4.
Record
findings
5.
Take
test
tube
#3
and
add
a
few
drops
of
HCl
until
color
change
is
noted
6.
Record
findings
Data/Results/Calculations:
Experiment
#1
Titration
Results:
Titration
#1
Acetic
acid
and
Propyl
Alcohol
17.1
mL
of
0.508
NaOH
Titration
#2
17.5mL
of
0.508
NaOH
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